What was found
OPERATOR REPORTED LOSS OF PILOT LIGHT DURING STABLE FLIGHT, DURING ATTEMPTED LANDING -- AND EMERGENCY DEFLATION DUE TO APPROACHING POWER LINES. WIND BLEW BALLOON AGAINST POWER LINES. PILOT SUSPECTED THE LOSS OF PILOT LIGHT WAS DUE TO CARBON BUILD-UP ON ORIFICES ON PILOT LIGHT ASSEMBLY. WHEN HOLES WERE CLEANED WITH A .080 INCH BROACH, PILOT LIGHT OPERATED 'BETTER THAN NEW'. THERE APPEARS TO BE NO ANNUAL REQUIREMENT TO CLEAN HOLES. OPERATOR RECOMMENDS MAKING THIS PROCEDURE PART OF THE ANNUAL INSPECTION.